Dear PyGui: A fast and powerful Graphical User Interface Toolkit for Python with minimal dependencies

Frame profiler

Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

2D skeletal animation runtimes for Spine.

Sol3 (sol2 v3.0) - a C++ <-> Lua API wrapper with advanced features and top notch performance - is here, and it's great! Documentation:

C++ Insights - See your source code with the eyes of a compiler

Immediate mode 3D gizmo for scene editing and other controls based on Dear Imgui

A C++20 library for fast serialization, deserialization and validation using reflection. Supports JSON, Avro, BSON, Cap'n Proto, CBOR, CSV, flexbuffers, msgpack, parquet, TOML, UBJSON, XML, YAML / …

Full featured file Dialog for Dear ImGui

Simple, portable, and self-contained stacktrace library for C++11 and newer